How Do I Set Up and Register an HVAC Business

Registering an HVAC business is six trips through the bureaucracy, and getting them in the right order saves a month. Most guys file the LLC first, then realize they cannot get a contractor license without the LLC name matching the surety bond, and they have to redo three forms. Here is the sequence that does not bite you.

Entity, EIN, and State Contractor License

Your business entity is the foundation. Almost every HVAC operator goes LLC for the liability shield plus simple taxes. S-corp election makes sense once you net over $80k.

1. Form your LLC through your secretary of state’s online portal. Filing fees range $50 (Kentucky) to $500 (Massachusetts). Pick a name that includes your service area like “Sandbridge HVAC LLC” not “Mike’s Heating Services” because Google ranks the geo.
2. Get your EIN at IRS.gov, takes 5 minutes, free. Avoid third-party sites that charge $200.
3. Open a business checking account at a local credit union or Chase. Bring the LLC certificate, EIN letter, and operating agreement.
4. State HVAC contractor license through your state board (varies by state, see California CSLB, Texas TDLR, Florida DBPR). Most require 2-4 years field experience, a trade exam, a business law exam, a surety bond ($10k-$25k), and proof of insurance.

Plan 60-90 days for the license. Some states have 6-month backlogs. Apply the day you start your other paperwork.

The reason the $80k S-corp threshold exists: an LLC’s entire profit is hit with 15.3% self-employment tax, while an S-corp lets you split it into a reasonable salary (taxed) and a distribution (not subject to SE tax). The catch is that an S-corp costs roughly $1,500-$2,500 a year in payroll service and tax prep, so below $80k of net profit the overhead eats the savings. Form the LLC now, elect S-corp later with one form when the numbers justify it. Your accountant can make the election retroactive to January of the year you ask.

What It Costs and How Long It Takes

Every step below is required somewhere in the sequence. The useful planning insight is that cost and timeline do not correlate at all.

EPA 608, Insurance, and Bonding

You cannot legally buy refrigerant without EPA 608. You cannot legally sell installs without insurance. Both are non-negotiable, both are cheaper than guys assume.

• EPA Section 608 Universal. $25-$150 through ESCO Institute or Mainstream Engineering. Online proctored. Four sections: Core, Type I (small appliances), Type II (high-pressure, residential AC), Type III (low-pressure chillers). Pass all four for Universal.
• General liability insurance. $1M per occurrence / $2M aggregate runs $80-$200/mo through Hiscox, Thimble, or NEXT. Brokers like Rogers Insurance specialize in HVAC.
• Commercial auto. Mandatory if a van is registered to your LLC. $120-$280/mo per van.
• Workers comp. Required the day you hire (most states). $0.80-$2.50 per $100 of payroll for HVAC class code.
• Surety bond. Your state board sets the amount. $250-$600/yr premium for a $10k bond if your credit is decent.

Get the certificate of insurance (COI) emailed to you in PDF. Customers and commercial property managers ask for it routinely.

One thing the cheap online GL quotes do not advertise: read the exclusions before you bind. Some instant-issue policies exclude “hot work,” and hot work means brazing, which means the policy excludes a core part of your job. Others cap work above two stories or exclude heat pump installs entirely. A broker who writes HVAC all day costs the same premium and knows which carriers actually pay HVAC claims. Five minutes comparing exclusion pages is worth more than $50 a month of premium savings.

Bind the GL policy when the board asks for proof of coverage, not months earlier. You are paying for protection on work you cannot legally perform yet, and no carrier refunds the waiting period.

Supplier Accounts and Permits

This is the step nobody talks about. Walking into Ferguson with a credit card costs you 15-25% more than having an account.

• Ferguson HVAC. Apply with EIN, COI, resale certificate (from your state department of revenue, free). Net-30 terms after first 3 months of orders.
• Johnstone Supply. Member-owned, generally better pricing on parts. Same documentation.
• Local refrigerant wholesaler. Refrigerant Depot, US Air Conditioning Distributors. Cylinder deposit accounts save real money on R-410A and R-454B.
• Mechanical permits. Register with your county/city building department. Most jurisdictions require a contractor account before pulling permits for changeouts or new installs.
• Resale certificate / sales tax permit. Through your state DOR. Lets you buy equipment tax-free for resale and collect/remit sales tax on what you install.

Why this belongs in the registration phase and not “later”: the 15-25% counter spread is not a convenience, it is your parts margin. When you sell a $14 capacitor inside a $285 flat-rate repair, account pricing is the difference between healthy and mediocre gross margin on every single ticket. And net-30 terms quietly solve the cash-flow squeeze of the first year, because the parts for Tuesday’s job get paid for with Tuesday’s check instead of your savings. What goes on those first stocking orders is covered in buying equipment and supplies.

Bookkeeping starts week one. QuickBooks Online Essentials ($55/mo) plus a separate fuel card (Wex or Fleet One) is the standard setup.

The pattern across all of it: the registration phase punishes sequence errors, not spending errors. Almost nothing here costs real money, but a name mismatch, a late license application, or a missing COI can each stall you for weeks at the exact moment you are burning savings with no revenue. Run the checklist in order once, and the whole apparatus quietly works for years.